Home / 145,437.40-200,803.02-111,385.72

Finding the Fourth Proportional to 145,437.40, 200,803.02 and 111,385.72

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Solution

The fourth proportional to 145,437.40, 200,803.02 and 111,385.72 is: 153,788.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,437.40 : 200,803.02 = 111,385.72 : x
  2. Step 2: Convert to fraction form
    145,437.40/200,803.02 = 111,385.72/x
  3. Step 3: Cross multiply
    145,437.40x = 200,803.02 × 111,385.72
  4. Step 4: Simplify right side
    145,437.40x = 22,366,588,960.87
  5. Step 5: Solve for x
    x = 22,366,588,960.87/145,437.40
  6. Step 6: Final answer
    x = 153,788.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.