Home / 98,971,931.80-148,457,897.70-86,217,347.80

Finding the Fourth Proportional to 98,971,931.80, 148,457,897.70 and 86,217,347.80

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Solution

The fourth proportional to 98,971,931.80, 148,457,897.70 and 86,217,347.80 is: 129,326,021.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,971,931.80 : 148,457,897.70 = 86,217,347.80 : x
  2. Step 2: Convert to fraction form
    98,971,931.80/148,457,897.70 = 86,217,347.80/x
  3. Step 3: Cross multiply
    98,971,931.80x = 148,457,897.70 × 86,217,347.80
  4. Step 4: Simplify right side
    98,971,931.80x = 12,799,646,199,657,718
  5. Step 5: Solve for x
    x = 12,799,646,199,657,718/98,971,931.80
  6. Step 6: Final answer
    x = 129,326,021.70

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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.