Home / 130,673.46-180,430.95-100,411.08

Finding the Fourth Proportional to 130,673.46, 180,430.95 and 100,411.08

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Solution

The fourth proportional to 130,673.46, 180,430.95 and 100,411.08 is: 138,645.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,673.46 : 180,430.95 = 100,411.08 : x
  2. Step 2: Convert to fraction form
    130,673.46/180,430.95 = 100,411.08/x
  3. Step 3: Cross multiply
    130,673.46x = 180,430.95 × 100,411.08
  4. Step 4: Simplify right side
    130,673.46x = 18,117,266,554.93
  5. Step 5: Solve for x
    x = 18,117,266,554.93/130,673.46
  6. Step 6: Final answer
    x = 138,645.34

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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.