Home / 142,041.12-213,143.08-57,785.72

Finding the Fourth Proportional to 142,041.12, 213,143.08 and 57,785.72

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Solution

The fourth proportional to 142,041.12, 213,143.08 and 57,785.72 is: 86,711.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,041.12 : 213,143.08 = 57,785.72 : x
  2. Step 2: Convert to fraction form
    142,041.12/213,143.08 = 57,785.72/x
  3. Step 3: Cross multiply
    142,041.12x = 213,143.08 × 57,785.72
  4. Step 4: Simplify right side
    142,041.12x = 12,316,626,340.82
  5. Step 5: Solve for x
    x = 12,316,626,340.82/142,041.12
  6. Step 6: Final answer
    x = 86,711.70

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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.