Home / 158,130.16-218,224.79-86,510.19

Finding the Fourth Proportional to 158,130.16, 218,224.79 and 86,510.19

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Solution

The fourth proportional to 158,130.16, 218,224.79 and 86,510.19 is: 119,386.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,130.16 : 218,224.79 = 86,510.19 : x
  2. Step 2: Convert to fraction form
    158,130.16/218,224.79 = 86,510.19/x
  3. Step 3: Cross multiply
    158,130.16x = 218,224.79 × 86,510.19
  4. Step 4: Simplify right side
    158,130.16x = 18,878,668,045.61
  5. Step 5: Solve for x
    x = 18,878,668,045.61/158,130.16
  6. Step 6: Final answer
    x = 119,386.89

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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.