Home / 189,451,143.60-284,176,715.40-128,229,140.40

Finding the Fourth Proportional to 189,451,143.60, 284,176,715.40 and 128,229,140.40

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Solution

The fourth proportional to 189,451,143.60, 284,176,715.40 and 128,229,140.40 is: 192,343,710.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,451,143.60 : 284,176,715.40 = 128,229,140.40 : x
  2. Step 2: Convert to fraction form
    189,451,143.60/284,176,715.40 = 128,229,140.40/x
  3. Step 3: Cross multiply
    189,451,143.60x = 284,176,715.40 × 128,229,140.40
  4. Step 4: Simplify right side
    189,451,143.60x = 36,439,735,937,437,440
  5. Step 5: Solve for x
    x = 36,439,735,937,437,440/189,451,143.60
  6. Step 6: Final answer
    x = 192,343,710.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.