Home / 131,641.08-181,681.20-101,402.16

Finding the Fourth Proportional to 131,641.08, 181,681.20 and 101,402.16

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Solution

The fourth proportional to 131,641.08, 181,681.20 and 101,402.16 is: 139,947.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,641.08 : 181,681.20 = 101,402.16 : x
  2. Step 2: Convert to fraction form
    131,641.08/181,681.20 = 101,402.16/x
  3. Step 3: Cross multiply
    131,641.08x = 181,681.20 × 101,402.16
  4. Step 4: Simplify right side
    131,641.08x = 18,422,866,111.39
  5. Step 5: Solve for x
    x = 18,422,866,111.39/131,641.08
  6. Step 6: Final answer
    x = 139,947.70

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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.